Natural rubber is an elastomeric polymer derived from the milky sap of rubber trees, composed primarily of polyisoprene with minor impurities. It boasts excellent elasticity, resilience, and resistance to abrasion and tearing, making it suitable for a wide range of applications requiring flexibility, air tightness, and shock absorption, such as tires, hoses, adhesives, gaskets, and various molded goods. However, it may have limitations in terms of resistance to certain environmental factors like heat, ozone, and chemicals.